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Вхідний коливальний контур радіоприймача містить конденсатор ємністю 1000 пф. амплітуда напругі на обкладках конденсатора під час приймання радіохвилі дорівнює 0, 05 в, амплітуда сили струму – 12, 6 ма. на яку довжину хвилі настроєно радіоприймач?

Физика

Ответы

artbogema2016
C=3*10^8 м/с     С=10^-9 Ф    U=0.05 B     I=12.6*10^-3 A    λ=?
===
CU²/2=L*I²/2
L=C**(U/I)²
λ=c*T=c*2*π*√(L*C)=2*π*c*C*U/I=2*3.14*3*10^8*10^-9*0.05/(12.6*10^-3)≈7.5 м
rezh2009766

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Must Waste More Time...


Дано: U₁=15V, I₂=50мА, U₃=30V, R1=1000 , R₂=700 , R₃=500 Знайти: P₁₂ , Ii , Ui , Pu₁ ?
ustinov434

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Must Waste More Time...


3. 200 грам ВОДЫ при температуре 15 °С смешали с 300 грамм водой при температуре 90°с. Найдите устан

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Вхідний коливальний контур радіоприймача містить конденсатор ємністю 1000 пф. амплітуда напругі на обкладках конденсатора під час приймання радіохвилі дорівнює 0, 05 в, амплітуда сили струму – 12, 6 ма. на яку довжину хвилі настроєно радіоприймач?
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